BuiltWith - Find out the technology behind websites
Unixstickers by Sticker Mule - Stickers for fans of unix, software, coding and open source
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Chumpu iMessage Sticker Pack - Animated Chumpu cartoon stickers for iMessage
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.
Zimit - Configure price quotes for services